diff --git a/openspec/changes/.pi-map.index.md b/openspec/changes/.pi-map.index.md
index 8204cb4..13f5add 100644
--- a/openspec/changes/.pi-map.index.md
+++ b/openspec/changes/.pi-map.index.md
@@ -1,31 +1,32 @@
-# openspec/changes (index)
-dir: openspec/changes
+# . (index)
+dir: .
+
+## Project Map Protocol
+
+1. Read this protocol and the root `.pi-map.index.md` first.
+2. Use `index:` / `map:` references to open relevant directory indexes and maps.
+3. Load indexes before rich maps during task-start navigation.
+4. Read the local rich map and actual source before editing.
+5. Treat non-empty `## dirty` sections in either artifact as stale.
+6. If source and generated artifacts disagree, trust source.
+7. If map and index disagree, trust neither blindly; verify from source and regenerate the pair.
+8. After editing source, run `project_map_patch` for each changed file.
+9. Before broad architectural claims or final handoff, run `project_map_validate` when freshness matters.
+
+Trust boundary: index routes, map orients, source decides.
 
 ## role
-Manages and tracks specification changes, versioning, and changelog generation for the OpenAPI specification.
+This is an empty directory with no files to analyze.
 ## parent
-index: openspec/.pi-map.index.md
-map: openspec/.pi-map.md
+-
 ## children
-- openspec/changes/archive
-  index: openspec/changes/archive/.pi-map.index.md
-  map: openspec/changes/archive/.pi-map.md
-- openspec/changes/multi-session-terminal-ux
-  index: openspec/changes/multi-session-terminal-ux/.pi-map.index.md
-  map: openspec/changes/multi-session-terminal-ux/.pi-map.md
-- openspec/changes/reorganize-long-files
-  index: openspec/changes/reorganize-long-files/.pi-map.index.md
-  map: openspec/changes/reorganize-long-files/.pi-map.md
-- openspec/changes/working-copies
-  index: openspec/changes/working-copies/.pi-map.index.md
-  map: openspec/changes/working-copies/.pi-map.md
-- openspec/changes/workspace-first-ui
-  index: openspec/changes/workspace-first-ui/.pi-map.index.md
-  map: openspec/changes/workspace-first-ui/.pi-map.md
+- archive
+  index: archive/.pi-map.index.md
+  map: archive/.pi-map.md
 ## files
 ## links
-index: openspec/changes/.pi-map.index.md
-map: openspec/changes/.pi-map.md
+index: ./.pi-map.index.md
+map: ./.pi-map.md
 ## workflows
 -
 ## dirty
diff --git a/openspec/changes/.pi-map.md b/openspec/changes/.pi-map.md
index d69d2f0..878b2e2 100644
--- a/openspec/changes/.pi-map.md
+++ b/openspec/changes/.pi-map.md
@@ -1,13 +1,27 @@
-# openspec/changes
-dir: openspec/changes
+# .
+dir: .
 
-index: openspec/changes/.pi-map.index.md
+index: ./.pi-map.index.md
+
+## Project Map Protocol
+
+1. Read this protocol and the root `.pi-map.index.md` first.
+2. Use `index:` / `map:` references to open relevant directory indexes and maps.
+3. Load indexes before rich maps during task-start navigation.
+4. Read the local rich map and actual source before editing.
+5. Treat non-empty `## dirty` sections in either artifact as stale.
+6. If source and generated artifacts disagree, trust source.
+7. If map and index disagree, trust neither blindly; verify from source and regenerate the pair.
+8. After editing source, run `project_map_patch` for each changed file.
+9. Before broad architectural claims or final handoff, run `project_map_validate` when freshness matters.
+
+Trust boundary: index routes, map orients, source decides.
 
 ## role
-Manages and tracks specification changes, versioning, and changelog generation for the OpenAPI specification.
+This is an empty directory with no files to analyze.
 ## files
 ## arch
-Event-sourced or diff-based architecture with structured change records, likely supporting incremental versioning and audit trails for specification evolution.
+N/A - no code or architecture present
 ## tags
 -
 ## symbols
diff --git a/openspec/changes/archive/.pi-map.index.md b/openspec/changes/archive/.pi-map.index.md
index 6c155c0..cc80d5a 100644
--- a/openspec/changes/archive/.pi-map.index.md
+++ b/openspec/changes/archive/.pi-map.index.md
@@ -2,7 +2,7 @@
 dir: archive
 
 ## role
-This package provides functionality for creating, reading, and extracting compressed archive files in various formats.
+Contains historical or deprecated code and resources that are no longer active in the project but retained for reference or backup purposes.
 ## parent
 index: ./.pi-map.index.md
 map: ./.pi-map.md
diff --git a/openspec/changes/archive/.pi-map.md b/openspec/changes/archive/.pi-map.md
index 39bfd31..dcdf178 100644
--- a/openspec/changes/archive/.pi-map.md
+++ b/openspec/changes/archive/.pi-map.md
@@ -4,10 +4,10 @@ dir: archive
 index: archive/.pi-map.index.md
 
 ## role
-This package provides functionality for creating, reading, and extracting compressed archive files in various formats.
+Contains historical or deprecated code and resources that are no longer active in the project but retained for reference or backup purposes.
 ## files
 ## arch
-The package uses a modular, format-agnostic interface pattern where a generic Archive type wraps format-specific implementations (tar, zip, etc.) with unified read/write/extract operations, supported by internal helper packages for each archive format.
+No active architecture; typically flat storage of obsolete files with no dependencies or patterns, isolated from the main codebase.
 ## tags
 -
 ## symbols
diff --git a/openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.index.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.index.md
index c50eebe..9b465db 100644
--- a/openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.index.md
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.index.md
@@ -52,6 +52,18 @@ map: archive/.pi-map.md
 - archive/2026-06-12-completed-changes-archive/tool-session-progress-and-updates
   index: archive/2026-06-12-completed-changes-archive/tool-session-progress-and-updates/.pi-map.index.md
   map: archive/2026-06-12-completed-changes-archive/tool-session-progress-and-updates/.pi-map.md
+- archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux
+  index: archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.pi-map.index.md
+  map: archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.pi-map.md
+- archive/2026-06-12-completed-changes-archive/reorganize-long-files
+  index: archive/2026-06-12-completed-changes-archive/reorganize-long-files/.pi-map.index.md
+  map: archive/2026-06-12-completed-changes-archive/reorganize-long-files/.pi-map.md
+- archive/2026-06-12-completed-changes-archive/working-copies
+  index: archive/2026-06-12-completed-changes-archive/working-copies/.pi-map.index.md
+  map: archive/2026-06-12-completed-changes-archive/working-copies/.pi-map.md
+- archive/2026-06-12-completed-changes-archive/workspace-first-ui
+  index: archive/2026-06-12-completed-changes-archive/workspace-first-ui/.pi-map.index.md
+  map: archive/2026-06-12-completed-changes-archive/workspace-first-ui/.pi-map.md
 ## files
 - README.md
 ## links
diff --git a/openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.md
index 4fe6b29..67cbb28 100644
--- a/openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.md
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/.pi-map.md
@@ -7,6 +7,10 @@ index: archive/2026-06-12-completed-changes-archive/.pi-map.index.md
 Stores historical records of fully implemented and audited OpenSpec changes for reference and audit trail purposes.
 ## files
 - README.md | Documents archived completed OpenSpec changes that have been audited and confirmed as fully implemented
+- multi-session-terminal-ux | Completed OpenSpec change for multi-session terminal UX
+- reorganize-long-files | Completed OpenSpec change for reorganizing long files
+- working-copies | Completed OpenSpec change for workspace-first working copies
+- workspace-first-ui | Completed OpenSpec change for workspace-first UI
 ## arch
 Simple flat-file archive using date-based directory naming and markdown documentation for immutable change tracking.
 ## tags
diff --git a/openspec/changes/multi-session-terminal-ux/.openspec.yaml b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.openspec.yaml
similarity index 100%
rename from openspec/changes/multi-session-terminal-ux/.openspec.yaml
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.openspec.yaml
diff --git a/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.pi-map.index.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.pi-map.index.md
new file mode 100644
index 0000000..ca79b97
--- /dev/null
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.pi-map.index.md
@@ -0,0 +1,26 @@
+# archive/2026-06-12-active-changes-archive/multi-session-terminal-ux (index)
+dir: archive/2026-06-12-active-changes-archive/multi-session-terminal-ux
+
+## role
+Archive of design documents and implementation plans for adding multi-session terminal UX support to a tool instance platform, preserving historical decision-making and phased development records.
+## parent
+index: archive/2026-06-12-active-changes-archive/.pi-map.index.md
+map: archive/2026-06-12-active-changes-archive/.pi-map.md
+## children
+-
+## files
+- .openspec.yaml
+- apply-pr1.md
+- apply-pr2.md
+- apply-pr3.md
+- design.md
+- explore.md
+- proposal.md
+- tasks.md
+## links
+index: archive/2026-06-12-active-changes-archive/multi-session-terminal-ux/.pi-map.index.md
+map: archive/2026-06-12-active-changes-archive/multi-session-terminal-ux/.pi-map.md
+## workflows
+-
+## dirty
+-
diff --git a/openspec/changes/multi-session-terminal-ux/.pi-map.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.pi-map.md
similarity index 76%
rename from openspec/changes/multi-session-terminal-ux/.pi-map.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.pi-map.md
index 5efd154..8fddddd 100644
--- a/openspec/changes/multi-session-terminal-ux/.pi-map.md
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/.pi-map.md
@@ -1,10 +1,10 @@
-# openspec/changes/multi-session-terminal-ux
-dir: openspec/changes/multi-session-terminal-ux
+# archive/2026-06-12-active-changes-archive/multi-session-terminal-ux
+dir: archive/2026-06-12-active-changes-archive/multi-session-terminal-ux
 
-index: openspec/changes/multi-session-terminal-ux/.pi-map.index.md
+index: archive/2026-06-12-active-changes-archive/multi-session-terminal-ux/.pi-map.index.md
 
 ## role
-Design specification and implementation documentation for adding multi-session terminal support to a tool instance platform
+Archive of design documents and implementation plans for adding multi-session terminal UX support to a tool instance platform, preserving historical decision-making and phased development records.
 ## files
 - .openspec.yaml | Defines metadata for a completed project specification named "multi-session-terminal-ux"
 - apply-pr1.md | Documents the implementation of database schema, Alembic migration, and TerminalManager multi-session core for a multi-session terminal UX feature. | dep: Alembic, SQLAlchemy, aiosqlite, asyncio, pytest, TerminalSession, TerminalManager, UUIDPrimaryKeyMixin, TimestampMixin, SessionLocal
@@ -15,7 +15,7 @@ Design specification and implementation documentation for adding multi-session t
 - proposal.md | Proposes architectural changes to support multiple concurrent terminal sessions per tool instance with improved UI/UX features | dep: TerminalManager, TerminalSession, api/terminal.py, TerminalComponent, terminal.tsx, WebSocket protocol, database schema
 - tasks.md | A software design document specifying 12 implementation tasks for adding multi-session terminal UX support across backend (Python/FastAPI) and frontend (React/TypeScript) with detailed acceptance criteria, file changes, and TDD testing steps. | dep: Alembic, FastAPI, WebSocket, React, TypeScript, xterm.js (implied), pytest, Jest/npm test
 ## arch
-Specification-driven development using phased PR implementation (backend schema/API → WebSocket/REST integration → frontend UI), with FastAPI/Python backend and React/TypeScript frontend, featuring TDD, backward compatibility preservation, and MVP-focused architectural decision records
+Specification-driven development with phased PR documentation (backend schema/migrations → API/WebSocket/frontend hooks → UI components), using FastAPI/Python backend with Alembic migrations, React/TypeScript frontend, WebSocket protocol, and TDD acceptance criteria across 12 structured implementation tasks.
 ## tags
 terminal, session, multi, apply, implementation, alembic, websocket, support
 ## symbols
diff --git a/openspec/changes/multi-session-terminal-ux/apply-pr1.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/apply-pr1.md
similarity index 100%
rename from openspec/changes/multi-session-terminal-ux/apply-pr1.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/apply-pr1.md
diff --git a/openspec/changes/multi-session-terminal-ux/apply-pr2.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/apply-pr2.md
similarity index 100%
rename from openspec/changes/multi-session-terminal-ux/apply-pr2.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/apply-pr2.md
diff --git a/openspec/changes/multi-session-terminal-ux/apply-pr3.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/apply-pr3.md
similarity index 100%
rename from openspec/changes/multi-session-terminal-ux/apply-pr3.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/apply-pr3.md
diff --git a/openspec/changes/multi-session-terminal-ux/design.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/design.md
similarity index 100%
rename from openspec/changes/multi-session-terminal-ux/design.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/design.md
diff --git a/openspec/changes/multi-session-terminal-ux/explore.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/explore.md
similarity index 100%
rename from openspec/changes/multi-session-terminal-ux/explore.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/explore.md
diff --git a/openspec/changes/multi-session-terminal-ux/proposal.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/proposal.md
similarity index 100%
rename from openspec/changes/multi-session-terminal-ux/proposal.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/proposal.md
diff --git a/openspec/changes/multi-session-terminal-ux/tasks.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/tasks.md
similarity index 100%
rename from openspec/changes/multi-session-terminal-ux/tasks.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/multi-session-terminal-ux/tasks.md
diff --git a/openspec/changes/reorganize-long-files/.openspec.yaml b/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/.openspec.yaml
similarity index 100%
rename from openspec/changes/reorganize-long-files/.openspec.yaml
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/.openspec.yaml
diff --git a/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/.pi-map.index.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/.pi-map.index.md
new file mode 100644
index 0000000..8571ef3
--- /dev/null
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/.pi-map.index.md
@@ -0,0 +1,22 @@
+# archive/2026-06-12-active-changes-archive/reorganize-long-files (index)
+dir: archive/2026-06-12-active-changes-archive/reorganize-long-files
+
+## role
+Contains archived planning documents for a completed structural refactoring initiative that split monolithic frontend pages and backend routers into thinner, more modular components and services.
+## parent
+index: archive/2026-06-12-active-changes-archive/.pi-map.index.md
+map: archive/2026-06-12-active-changes-archive/.pi-map.md
+## children
+-
+## files
+- .openspec.yaml
+- proposal.md
+- spec.md
+- tasks.md
+## links
+index: archive/2026-06-12-active-changes-archive/reorganize-long-files/.pi-map.index.md
+map: archive/2026-06-12-active-changes-archive/reorganize-long-files/.pi-map.md
+## workflows
+-
+## dirty
+-
diff --git a/openspec/changes/reorganize-long-files/.pi-map.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/.pi-map.md
similarity index 62%
rename from openspec/changes/reorganize-long-files/.pi-map.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/.pi-map.md
index 64754e6..079df56 100644
--- a/openspec/changes/reorganize-long-files/.pi-map.md
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/.pi-map.md
@@ -1,17 +1,17 @@
-# openspec/changes/reorganize-long-files
-dir: openspec/changes/reorganize-long-files
+# archive/2026-06-12-active-changes-archive/reorganize-long-files
+dir: archive/2026-06-12-active-changes-archive/reorganize-long-files
 
-index: openspec/changes/reorganize-long-files/.pi-map.index.md
+index: archive/2026-06-12-active-changes-archive/reorganize-long-files/.pi-map.index.md
 
 ## role
-Tracks a completed structural refactoring initiative to decompose monolithic frontend pages and backend routers into smaller, focused components and services.
+Contains archived planning documents for a completed structural refactoring initiative that split monolithic frontend pages and backend routers into thinner, more modular components and services.
 ## files
 - .openspec.yaml | Configuration file tracking a completed project task for reorganizing long files
 - proposal.md | Proposes a structural refactoring to split monolithic frontend pages and backend routers into thinner orchestrators with extracted components/services, restoring a thin-page/thin-router/fat-component pattern. | dep: React components, FastAPI routers, WebSocket, Docker, git services
 - spec.md | A specification document defining a pure structural refactoring to split monolithic frontend pages/backend routers and CSS into smaller, focused components and services without changing any behavior or API contracts. | dep: React, CSS Modules, WebSocket, FastAPI/Flask routers, TypeScript, Vite
 - tasks.md | Tracks the completion status of a codebase reorganization initiative to slim long files by extracting components and services into dedicated modules.
 ## arch
-Documentation-driven refactoring using spec/proposal/task tracking files with a thin-page/thin-router/fat-component pattern, preserving all API contracts and behavior while extracting dedicated component/service modules.
+Documentation-driven refactoring using specification-proposal-task workflow with a thin-page/thin-router/fat-component pattern, emphasizing pure structural decomposition without behavioral changes.
 ## tags
 components, services, long, .openspec, structural, refactoring, split, monolithic
 ## symbols
diff --git a/openspec/changes/reorganize-long-files/proposal.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/proposal.md
similarity index 100%
rename from openspec/changes/reorganize-long-files/proposal.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/proposal.md
diff --git a/openspec/changes/reorganize-long-files/spec.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/spec.md
similarity index 100%
rename from openspec/changes/reorganize-long-files/spec.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/spec.md
diff --git a/openspec/changes/reorganize-long-files/tasks.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/tasks.md
similarity index 100%
rename from openspec/changes/reorganize-long-files/tasks.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/reorganize-long-files/tasks.md
diff --git a/openspec/changes/working-copies/.openspec.yaml b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/.openspec.yaml
similarity index 100%
rename from openspec/changes/working-copies/.openspec.yaml
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/.openspec.yaml
diff --git a/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/.pi-map.index.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/.pi-map.index.md
new file mode 100644
index 0000000..4a821ed
--- /dev/null
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/.pi-map.index.md
@@ -0,0 +1,24 @@
+# archive/2026-06-12-active-changes-archive/working-copies (index)
+dir: archive/2026-06-12-active-changes-archive/working-copies
+
+## role
+Archive of design documents and specifications for implementing persistent workspace-based tool instances that replace direct repository mounting with isolated git working copies.
+## parent
+index: archive/2026-06-12-active-changes-archive/.pi-map.index.md
+map: archive/2026-06-12-active-changes-archive/.pi-map.md
+## children
+-
+## files
+- .openspec.yaml
+- design.md
+- explore.md
+- proposal.md
+- spec.md
+- tasks.md
+## links
+index: archive/2026-06-12-active-changes-archive/working-copies/.pi-map.index.md
+map: archive/2026-06-12-active-changes-archive/working-copies/.pi-map.md
+## workflows
+-
+## dirty
+-
diff --git a/openspec/changes/working-copies/.pi-map.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/.pi-map.md
similarity index 69%
rename from openspec/changes/working-copies/.pi-map.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/.pi-map.md
index 92ebef0..59e634e 100644
--- a/openspec/changes/working-copies/.pi-map.md
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/.pi-map.md
@@ -1,10 +1,10 @@
-# openspec/changes/working-copies
-dir: openspec/changes/working-copies
+# archive/2026-06-12-active-changes-archive/working-copies
+dir: archive/2026-06-12-active-changes-archive/working-copies
 
-index: openspec/changes/working-copies/.pi-map.index.md
+index: archive/2026-06-12-active-changes-archive/working-copies/.pi-map.index.md
 
 ## role
-Design and specification package for replacing direct repository mounting/cloning with persistent, shared Git working copy workspaces in tool instances.
+Archive of design documents and specifications for implementing persistent workspace-based tool instances that replace direct repository mounting with isolated git working copies.
 ## files
 - .openspec.yaml | Defines metadata for a completed project named "working-copies" with timeline tracking
 - design.md | Design document for implementing workspace-based tool instances that replace direct repository mounting with isolated git working copies | dep: FastAPI, SQLAlchemy, Alembic, Docker Compose, Git, React/TypeScript, asyncio subprocess
@@ -13,7 +13,7 @@ Design and specification package for replacing direct repository mounting/clonin
 - spec.md | Technical specification for implementing persistent workspace-based tool instances that replace mount/clone modes with explicit Git repository workspaces | dep: Git, PostgreSQL, REST API, React/TypeScript frontend, Docker containers, Python backend
 - tasks.md | Project task tracking document for implementing workspace-based tool instances across backend and frontend in a multi-PR phased approach | dep: Alembic, FastAPI, SQLAlchemy, React, TypeScript, pytest, ruff, ESLint, Git, Docker Compose
 ## arch
-Document-driven design process using layered specification documents (exploration → proposal → design → spec → tasks) with YAML metadata tracking, following a phased multi-PR implementation strategy across backend and frontend systems.
+Design-driven documentation package containing phased technical specifications (proposal → design → exploration → spec → tasks) for a Workspace entity abstraction, with YAML metadata tracking and multi-PR implementation planning across backend/frontend systems.
 ## tags
 workspace, tool, instances, git, design, replace, project, working
 ## symbols
diff --git a/openspec/changes/working-copies/design.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/design.md
similarity index 100%
rename from openspec/changes/working-copies/design.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/design.md
diff --git a/openspec/changes/working-copies/explore.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/explore.md
similarity index 100%
rename from openspec/changes/working-copies/explore.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/explore.md
diff --git a/openspec/changes/working-copies/proposal.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/proposal.md
similarity index 100%
rename from openspec/changes/working-copies/proposal.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/proposal.md
diff --git a/openspec/changes/working-copies/spec.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/spec.md
similarity index 100%
rename from openspec/changes/working-copies/spec.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/spec.md
diff --git a/openspec/changes/working-copies/tasks.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/tasks.md
similarity index 100%
rename from openspec/changes/working-copies/tasks.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/working-copies/tasks.md
diff --git a/openspec/changes/workspace-first-ui/.openspec.yaml b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/.openspec.yaml
similarity index 100%
rename from openspec/changes/workspace-first-ui/.openspec.yaml
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/.openspec.yaml
diff --git a/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/.pi-map.index.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/.pi-map.index.md
new file mode 100644
index 0000000..6d81a0f
--- /dev/null
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/.pi-map.index.md
@@ -0,0 +1,23 @@
+# archive/2026-06-12-active-changes-archive/workspace-first-ui (index)
+dir: archive/2026-06-12-active-changes-archive/workspace-first-ui
+
+## role
+Archive of planning documents for a workspace-first UI redesign that reorients the product around persistent writable workspaces rather than direct repository browsing.
+## parent
+index: archive/2026-06-12-active-changes-archive/.pi-map.index.md
+map: archive/2026-06-12-active-changes-archive/.pi-map.md
+## children
+-
+## files
+- .openspec.yaml
+- design.md
+- proposal.md
+- spec.md
+- tasks.md
+## links
+index: archive/2026-06-12-active-changes-archive/workspace-first-ui/.pi-map.index.md
+map: archive/2026-06-12-active-changes-archive/workspace-first-ui/.pi-map.md
+## workflows
+-
+## dirty
+-
diff --git a/openspec/changes/workspace-first-ui/.pi-map.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/.pi-map.md
similarity index 68%
rename from openspec/changes/workspace-first-ui/.pi-map.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/.pi-map.md
index 648a4fd..71d84bb 100644
--- a/openspec/changes/workspace-first-ui/.pi-map.md
+++ b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/.pi-map.md
@@ -1,10 +1,10 @@
-# openspec/changes/workspace-first-ui
-dir: openspec/changes/workspace-first-ui
+# archive/2026-06-12-active-changes-archive/workspace-first-ui
+dir: archive/2026-06-12-active-changes-archive/workspace-first-ui
 
-index: openspec/changes/workspace-first-ui/.pi-map.index.md
+index: archive/2026-06-12-active-changes-archive/workspace-first-ui/.pi-map.index.md
 
 ## role
-Product specification and design documentation package for a workspace-first UI refresh project that reorients the application around persistent writable workspaces rather than direct repository browsing.
+Archive of planning documents for a workspace-first UI redesign that reorients the product around persistent writable workspaces rather than direct repository browsing.
 ## files
 - .openspec.yaml | Defines metadata for a completed project specification named "workspace-first-ui"
 - design.md | Design document for a workspace-first UI refresh, detailing backend API/services and frontend components for file management, git operations, and tool instances scoped to workspaces. | dep: FastAPI, SQLAlchemy/AsyncSession, React, React Router, asyncio, subprocess, os
@@ -12,7 +12,7 @@ Product specification and design documentation package for a workspace-first UI
 - spec.md | Product specification document defining a workspace-first UI refresh that replaces direct repository file browsing with workspace-centric navigation, new routes, and redesigned pages for projects and workspace details. | dep: React/Next.js (implied by .tsx, routing), REST API backend, database (existing workspaces table), TypeScript, ruff, eslint
 - tasks.md | Project task tracking document for a workspace-first UI refresh, breaking work into 3 sequential PRs with backend endpoints, frontend workspace detail page, and projects page refresh with routing changes. | dep: markdown, pytest, ruff, TypeScript compiler, eslint, npm, git, python
 ## arch
-Documentation-driven specification architecture using sequential PR-based task breakdown (backend → workspace detail page → projects page/routing), with layered design documents progressing from proposal → product spec → technical design → implementation tasks.
+Specification-driven development with phased PR-based delivery (backend → frontend → routing), using structured product docs (proposal → design → spec → tasks) and OpenAPI-style metadata for project tracking.
 ## tags
 workspace, first, refresh, design, document, project, specification, .openspec
 ## symbols
diff --git a/openspec/changes/workspace-first-ui/design.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/design.md
similarity index 100%
rename from openspec/changes/workspace-first-ui/design.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/design.md
diff --git a/openspec/changes/workspace-first-ui/proposal.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/proposal.md
similarity index 100%
rename from openspec/changes/workspace-first-ui/proposal.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/proposal.md
diff --git a/openspec/changes/workspace-first-ui/spec.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/spec.md
similarity index 100%
rename from openspec/changes/workspace-first-ui/spec.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/spec.md
diff --git a/openspec/changes/workspace-first-ui/tasks.md b/openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/tasks.md
similarity index 100%
rename from openspec/changes/workspace-first-ui/tasks.md
rename to openspec/changes/archive/2026-06-12-completed-changes-archive/workspace-first-ui/tasks.md
diff --git a/openspec/changes/multi-session-terminal-ux/.pi-map.index.md b/openspec/changes/multi-session-terminal-ux/.pi-map.index.md
deleted file mode 100644
index 23b53d2..0000000
--- a/openspec/changes/multi-session-terminal-ux/.pi-map.index.md
+++ /dev/null
@@ -1,26 +0,0 @@
-# openspec/changes/multi-session-terminal-ux (index)
-dir: openspec/changes/multi-session-terminal-ux
-
-## role
-Design specification and implementation documentation for adding multi-session terminal support to a tool instance platform
-## parent
-index: openspec/changes/.pi-map.index.md
-map: openspec/changes/.pi-map.md
-## children
--
-## files
-- .openspec.yaml
-- apply-pr1.md
-- apply-pr2.md
-- apply-pr3.md
-- design.md
-- explore.md
-- proposal.md
-- tasks.md
-## links
-index: openspec/changes/multi-session-terminal-ux/.pi-map.index.md
-map: openspec/changes/multi-session-terminal-ux/.pi-map.md
-## workflows
--
-## dirty
--
diff --git a/openspec/changes/reorganize-long-files/.pi-map.index.md b/openspec/changes/reorganize-long-files/.pi-map.index.md
deleted file mode 100644
index 38ede60..0000000
--- a/openspec/changes/reorganize-long-files/.pi-map.index.md
+++ /dev/null
@@ -1,22 +0,0 @@
-# openspec/changes/reorganize-long-files (index)
-dir: openspec/changes/reorganize-long-files
-
-## role
-Tracks a completed structural refactoring initiative to decompose monolithic frontend pages and backend routers into smaller, focused components and services.
-## parent
-index: openspec/changes/.pi-map.index.md
-map: openspec/changes/.pi-map.md
-## children
--
-## files
-- .openspec.yaml
-- proposal.md
-- spec.md
-- tasks.md
-## links
-index: openspec/changes/reorganize-long-files/.pi-map.index.md
-map: openspec/changes/reorganize-long-files/.pi-map.md
-## workflows
--
-## dirty
--
diff --git a/openspec/changes/working-copies/.pi-map.index.md b/openspec/changes/working-copies/.pi-map.index.md
deleted file mode 100644
index f52c3e0..0000000
--- a/openspec/changes/working-copies/.pi-map.index.md
+++ /dev/null
@@ -1,24 +0,0 @@
-# openspec/changes/working-copies (index)
-dir: openspec/changes/working-copies
-
-## role
-Design and specification package for replacing direct repository mounting/cloning with persistent, shared Git working copy workspaces in tool instances.
-## parent
-index: openspec/changes/.pi-map.index.md
-map: openspec/changes/.pi-map.md
-## children
--
-## files
-- .openspec.yaml
-- design.md
-- explore.md
-- proposal.md
-- spec.md
-- tasks.md
-## links
-index: openspec/changes/working-copies/.pi-map.index.md
-map: openspec/changes/working-copies/.pi-map.md
-## workflows
--
-## dirty
--
diff --git a/openspec/changes/workspace-first-ui/.pi-map.index.md b/openspec/changes/workspace-first-ui/.pi-map.index.md
deleted file mode 100644
index 16da32f..0000000
--- a/openspec/changes/workspace-first-ui/.pi-map.index.md
+++ /dev/null
@@ -1,23 +0,0 @@
-# openspec/changes/workspace-first-ui (index)
-dir: openspec/changes/workspace-first-ui
-
-## role
-Product specification and design documentation package for a workspace-first UI refresh project that reorients the application around persistent writable workspaces rather than direct repository browsing.
-## parent
-index: openspec/changes/.pi-map.index.md
-map: openspec/changes/.pi-map.md
-## children
--
-## files
-- .openspec.yaml
-- design.md
-- proposal.md
-- spec.md
-- tasks.md
-## links
-index: openspec/changes/workspace-first-ui/.pi-map.index.md
-map: openspec/changes/workspace-first-ui/.pi-map.md
-## workflows
--
-## dirty
--